currently all backlinks are parsed with markdown parser. So only explict urls like below are supported: - <https://tangled.org/owner.com/repo-name/issues/123> - [full url](https://tangled.org/owner.com/repo-name/issues/123) - [absolute path](/owner.com/repo-name/issues/123) Also `#comment-123` fragment is supported too. All references in issue/pull/comment records are stored in at-uri format. we do have a `mentions` field, but it isn't used yet. mentions are parsed on rendering and aren't stored anywhere for now. Signed-off-by: Seongmin Lee <git@boltless.me>